What's the difference between catalyst and change?

Catalyst


Definition:

Example Sentences:

  • (1) The radioprotective action in E. coli ATCC 9637 of ascorbate added to media containing the weak sensitizer, tetracycline (effect described by Pittillo and Lucas (1967)), was found to be dependent on the presence of metal catalysts of the autoxidation of ascorbate.
  • (2) "If I hadn't scored that goal, I might still have ended up playing in Italy [Platt went on to play for Bari, Juventus and Sampdoria] but, realistically, I'm sure it was the catalyst.
  • (3) Enzymes are good catalysts in terms of high catalytic and specific activity with ability to function under mild conditions.
  • (4) The main aim of this brief contribution is to suggest that our understanding of the general principles of osmochemistry may provide useful insights into the type of mechanism by which solute-translocating catalysts work.
  • (5) Shelby Quast, of Equality Now, said the gathering could be a “tipping point” and act as a catalyst for change, so that girls in the US could finally be protected: “It’s the first time that members of the government are coming around the table to meet with civil society, survivors and members of the diaspora – this is the first step towards putting together a comprehensive action plan to tackling FGM.” Campaigners are calling for the government to look at practical ways that FGM could be wiped out in the United States – such as engaging with paediatricians and other doctors, immigration officers and visa offices.
  • (6) With different oxidation catalysts most antioxidants and amino acids tested enhanced polymerization.
  • (7) The high sites' density with basic character, evidenced by use of various probe molecules, is very similar for the two asbestos types (chrysotile and crocidolite) and on the same order as the density encountered in some catalysts.
  • (8) Fillings were made of Concise composite resin, without applying an intermediary resin (1), after applying the resin layer (2), after diluting the mix with one (3) or two (4) drops of catalyst resin but without an intermediary resin, and after diluting the mix and applying the resin layer (5).
  • (9) Monoclonal antibodies elicited to haptens that are analogs of the transition state for hydrolysis of carboxylic esters behaved as enzymic catalysts with the appropriate substrates.
  • (10) Rapid addition of purines and pyrimidines to alpha, beta-unsaturated carbonyl compounds (such as acrolin) is a general phenomenon which does not require an amine catalyst.
  • (11) Time acts as a catalyst for members to learn to respect and appreciate each other.
  • (12) The resulting solution is directed into tubes containing a catalyst that is activated by UV light and causes the dissolved CO2 to react with water (H2O) to form methanol (CH3OH).
  • (13) Manganese therefore acts as a catalyst for the non-enzymatic reaction, but magnesium does not.
  • (14) When the reaction was done in dimethyl sulfoxide, with 1-methylimidazole as the catalyst, a third compound was observed, and identified as 1,2,4-tri-O-acetyl-3-C-(acetoxymethyl)-3-O-(methylthiomethyl)-D-glycero- tetrito l [3-O-(methylthiomethyl)apiitol tetraacetate] by gas-liquid chromatography and mass spectrometry.
  • (15) Russell also described the Commonwealth Games as a catalyst but was realistic enough not to claim they immediately changed an area with long, deep-rooted problems, or miraculously roused a poor, generally unhealthy local population into vigorously playing sport.
  • (16) The device limits the amount of oxygen entering with the sample to a maximum of 2%, which is rapidly removed by reacting with hydrogen in the presence of a palladium catalyst.
  • (17) The yields of Thf-FU and more especially of Thf2-FU were greatly dependent on the relative amount of SnCl4, and 0.01-0.1 equiv of the catalyst with respect to Me3Si-FU gave the best results.
  • (18) Some officers close to the case believe George and Allen may have always harboured paedophilic thoughts but Blanchard provided a "catalyst" which encouraged them to act out their fantasies.
  • (19) Dusan Tadic was introduced at the break and looked a catalyst for a comeback.
  • (20) These findings may indicate that trace amounts of acidic catalysts remaining after production of IPM are responsible for the toxic effect.

Change


Definition:

  • (v. t.) To alter; to make different; to cause to pass from one state to another; as, to change the position, character, or appearance of a thing; to change the countenance.
  • (v. t.) To alter by substituting something else for, or by giving up for something else; as, to change the clothes; to change one's occupation; to change one's intention.
  • (v. t.) To give and take reciprocally; to exchange; -- followed by with; as, to change place, or hats, or money, with another.
  • (v. t.) Specifically: To give, or receive, smaller denominations of money (technically called change) for; as, to change a gold coin or a bank bill.
  • (v. i.) To be altered; to undergo variation; as, men sometimes change for the better.
  • (v. i.) To pass from one phase to another; as, the moon changes to-morrow night.
  • (v. t.) Any variation or alteration; a passing from one state or form to another; as, a change of countenance; a change of habits or principles.
  • (v. t.) A succesion or substitution of one thing in the place of another; a difference; novelty; variety; as, a change of seasons.
  • (v. t.) A passing from one phase to another; as, a change of the moon.
  • (v. t.) Alteration in the order of a series; permutation.
  • (v. t.) That which makes a variety, or may be substituted for another.
  • (v. t.) Small money; the money by means of which the larger coins and bank bills are made available in small dealings; hence, the balance returned when payment is tendered by a coin or note exceeding the sum due.
  • (v. t.) A place where merchants and others meet to transact business; a building appropriated for mercantile transactions.
  • (v. t.) A public house; an alehouse.
  • (v. t.) Any order in which a number of bells are struck, other than that of the diatonic scale.

Example Sentences:

  • (1) Once treatment began, no significant changes occurred in Group 1, but both PRA and A2 rose significantly in Groups 2 and 3.
  • (2) Thirty-two patients (10 male, 22 female; age 37-82 years) undergoing maintenance haemodialysis or haemofiltration were studied by means of Holter device capable of simultaneously analysing rhythm and ST-changes in three leads.
  • (3) The assembly reaction is accompanied by characteristic changes in fluorescence emission and dichroic absorption.
  • (4) Although the mean values for all hemodynamic variables between the two placebo periods were minimally changed, the differences in individual patients were striking.
  • (5) It is concluded that during exposure to simulated microgravity early signs of osteoporosis occur in the tibial spongiosa and that changes in the spongy matter of tubular bones and vertebrae are similar and systemic.
  • (6) The various evocational changes appear to form sets of interconnected systems and this complex network seems to embody some plasticity since it has been possible to suppress experimentally some of the most universal evocational events or alter their temporal order without impairing evocation itself.
  • (7) A change in the pattern of care of children with IDDM, led to a pronounced decrease in hospital use by this patient group.
  • (8) The pattern of the stressor that causes a change in the pitch can be often identified only tentatively, if there is no additional information.
  • (9) It has been generally believed that the ligand-binding of steroid hormone receptors triggers an allosteric change in receptor structure, manifested by an increased affinity of the receptor for DNA in vitro and nuclear target elements in vivo, as monitored by nuclear translocation.
  • (10) Changes in cardiac adenosine triphosphate (ATP), phosphocreatine (PCr) and inorganic phosphate (Pi) were followed and intracellular pH (pHi) was estimated from the chemical shift of Pi.
  • (11) Subsequently, the study of bundle branch block and A-V block cases revealed that no explicit correlation existed between histopathological changes and functional disturbances nor between disturbances in conduction (i.e.
  • (12) It involves creativity, understanding of art form and the ability to improvise in the highly complex environment of a care setting.” David Cameron has boosted dementia awareness but more needs to be done Read more She warns: “To effect a cultural change in dementia care requires a change of thinking … this approach is complex and intricate, and can change cultural attitudes by regarding the arts as central to everyday life of the care home.” Another participant, Mary*, a former teacher who had been bedridden for a year, read plays with the reminiscence arts practitioner.
  • (13) As collapse was imminent, MAP increased but CO and TPR did not change significantly.
  • (14) Then a handful of organisers took a major bet on the power of people – calling for the largest climate change mobilisation in history to kick-start political momentum.
  • (15) Type 1 changes (decreased signal intensity on T1-weighted spin-echo images and increased signal intensity on T2-weighted images) were identified in 20 patients (4%) and type 2 (increased signal intensity on T1-weighted images and isointense or slightly increased signal intensity on T2-weighted images) in 77 patients (16%).
  • (16) No significant change occurred in the bacterial population of our hospital unit during the period of the study (more than 3 years).
  • (17) The availability and success of changes in reproductive technology should lead to a reappraisal of the indications for hysterectomy, especially in young women.
  • (18) The epidemiology of HIV infection among women and hence among children has progressively changed since the onset of the epidemic in Western countries.
  • (19) The present study examined whether the lack of chronic hemodynamic effects of ANP in control rats was due to changes in vascular reactivity to the peptide.
  • (20) The pancreatic changes are unlikely to be an artefact, but rather a direct toxic effect of the alcohol as confirmed by the biochemical changes.